A CALPHAD-MD coupled method to reveal the strengthening mechanism in precipitation-strengthening Cu-Ni-Al alloy with evolving microstructures

An integrated strategy is proposed for the design and performance evaluation of nanocrystalline (NC) copper prepared by using the hot-pressing sintering process (HPS). Molecular dynamics (MD) simulation is employed to investigate the microstructure and performance of the prepared NC copper. The merging of nanoparticles (NPs) during HPS is influenced by the initial surface area of NPs. A higher surface area corresponding to a smaller size of NPs will promote the merging of NPs by providing more interface for the diffusion of atoms. The designed grain size can be obtained by adjusting the initial size of NPs. The mechanical properties of NC copper do not present a liner correlation with the grain size. With the grain size increasing from 1.51 to 4.10 nm, the strength and ductility of NC copper first increase but then decrease. The cooperating influence of the grain boundaries with high strength and the matrix with high ductility on the mechanical properties is revealed. This study highlights the relationship between microstructure evolution and mechanical properties in NC metals, offering insights into designing high-performance NC materials. The MD model can be extended into another case with a larger size and time scale.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

A CALPHAD-MD coupled method to reveal the strengthening mechanism in precipitation-strengthening Cu-Ni-Al alloy with evolving microstructures

Cited by 4 publications

References 27 publications

CALPHAD-guided investigation on enhancing NiAl bronze properties and microstructures evolution with Mn Addition

CALPHAD-guided investigation on enhancing NiAl bronze properties and microstructures evolution with Mn Addition

Strategy for co-enhancement of corrosion resistance-strength of Cu-7Ni-3Al-1Fe-1Mn alloy: Rare earth Sm microalloying

Novel insight into the microstructure evolution and strengthening mechanism of nanocrystalline copper prepared by hot-pressing sintering: A molecular dynamics study

Contact Info

Product

Resources

About